121202111021200 has 480 divisors, whose sum is σ = 344875335137280. Its totient is φ = 40460716800000.

The previous prime is 121202111021171. The next prime is 121202111021269. The reversal of 121202111021200 is 2120111202121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 396696495 + ... + 397001905.

It is an arithmetic number, because the mean of its divisors is an integer number (718490281536).

Almost surely, 2^{121202111021200} is an apocalyptic number.

121202111021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121202111021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172437667568640).

121202111021200 is an abundant number, since it is smaller than the sum of its proper divisors (223673224116080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121202111021200 is a wasteful number, since it uses less digits than its factorization.

121202111021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305607 (or 305596 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121202111021200 its reverse (2120111202121), we get a palindrome (123322222223321).

It can be divided in two parts, 1212021 and 11021200, that added together give a palindrome (12233221).

The spelling of 121202111021200 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred eleven million, twenty-one thousand, two hundred".